Does it make a difference on when you take your synthroid before a blood test? I feel like I am now hypo since a tt in june for the treatment of graves. I am tired all the time, getting a pot belly and gaining weight like crazy...but...when I had my blood taken in august, after being on 1.0 of synthroid, my tsh was .10 (.50-5.0 normal range). I had taken my med in the morning at 7:30 and had blood drawn at 9:45. Did that have anything to do with the low tsh? Now the doctor has lowered me to .75 of synthroid....I am so shocked at the hyper reading. I cant imagine what .75 is going to make me feel like. Can I call him and tell him what I did....take the medicine right before a test? Could that have made a difference? Thanks
My doctor tells me to always come before eating anything and without taking my meds. So I go first thing in the morning.
I know exactly what you mean....
My thyroid is tiny according to my endocrinologist. He explained that in order to feel better, I will probably have to be slightly hypERthryoidic on paper.
My GP however keeps wanting to lower my L-Thyroxine in order to keep me within normal ranges (on paper). But I know my body, and I certainly gain weight when I'm on anything less than I am. Even now, I sometimes lack energy and still have to really watch what I eat, and I'm on 100mcg T4 and a combo tablet of a further 100mcg T4 +20mcg of T3 (novothyrol).
I think my problem is really the conversion of T4 to T3... but I'm dealing with a bunch of monkeys here and I'm afraid to ask them in case they lower my dose.
He refused to test those. My ft4 was pretty good before my tt. In fact I thought I felt better on methimizole than the way I feel now.
he needs a reality check, then. Free t3 and Free t4 are fairly standard. i'd get assertive with the doc about having him make an order for those, to be checked regularly, or find another doc.
To answer your original question -- If the dolt is only testing your TSH, you can take your Synthroid before the test. It doesn't affect TSH. It only affects free T4, causing a temporary spike for a few hours.
But I agree with the others... You need an MD who will test your free Ts each time, otherwise you'll keep having results like you're having... Feeling poorly and wondering why.
